AS3743 Cleveland Cliffs Steel LLC

• IPv4 Prefixes

Country	Announced Prefix	Description	Valid ROA	Parent Prefix	RIR
	156.144.51.0/24	Cleveland Cliffs Steel LLC		156.144.0.0/16	ARIN
	156.144.99.0/24	Cleveland Cliffs Steel LLC		156.144.0.0/16	ARIN
	156.144.100.0/24	Cleveland Cliffs Steel LLC		156.144.0.0/16	ARIN
	156.144.108.0/24	ARCELORMITTAL USA INC.		156.54.0.0/16	RIPE
	156.144.109.0/24	Cleveland Cliffs Steel LLC		156.144.0.0/16	ARIN
	156.144.208.0/24	Cleveland Cliffs Steel LLC		154.70.0.0/18	AfriNIC
	156.144.249.0/24	Cleveland Cliffs Steel LLC		156.144.0.0/16	ARIN

• IPv4 Peers

Country	ASN	Name	Description
	AS209	CENTURYLINK-US-LEGACY-QWEST	CenturyLink Communications, LLC

• IPv4 Upstreams

Country	ASN	Name	Description
	AS209	CENTURYLINK-US-LEGACY-QWEST	CenturyLink Communications, LLC

IPv4 Upstream Graph

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IPv4 Upstream Graph

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#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
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# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#


ASNumber:       3743
ASName:         ARCEL-2
ASHandle:       AS3743
RegDate:        2009-09-09
Updated:        2023-06-30
Comment:        WDS3-ARIN00    
Ref:            https://rdap.arin.net/registry/autnum/3743


OrgName:        Cleveland Cliffs Steel LLC
OrgId:          ARCEL-2
Address:        1 SOUTH DEARBORN, 19TH FLOOR
City:           CHICAGO
StateProv:      IL
PostalCode:     60603
Country:        US
RegDate:        2009-08-14
Updated:        2025-01-27
Ref:            https://rdap.arin.net/registry/entity/ARCEL-2


OrgAbuseHandle: MPC47-ARIN
OrgAbuseName:   Collins, Michelle P
OrgAbusePhone:  +1-724-284-2034 
OrgAbuseEmail:  michelle.collins@clevelandcliffs.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/MPC47-ARIN

OrgTechHandle: MPC47-ARIN
OrgTechName:   Collins, Michelle P
OrgTechPhone:  +1-724-284-2034 
OrgTechEmail:  michelle.collins@clevelandcliffs.com
OrgTechRef:    https://rdap.arin.net/registry/entity/MPC47-ARIN

OrgTechHandle: MLC49-ARIN
OrgTechName:   Collins, Michele L.
OrgTechPhone:  +1-724-284-2000 
OrgTechEmail:  michele.collins@clevelandcliffs.com
OrgTechRef:    https://rdap.arin.net/registry/entity/MLC49-ARIN

RNOCHandle: MPC47-ARIN
RNOCName:   Collins, Michelle P
RNOCPhone:  +1-724-284-2034 
RNOCEmail:  michelle.collins@clevelandcliffs.com
RNOCRef:    https://rdap.arin.net/registry/entity/MPC47-ARIN

RTechHandle: MPC47-ARIN
RTechName:   Collins, Michelle P
RTechPhone:  +1-724-284-2034 
RTechEmail:  michelle.collins@clevelandcliffs.com
RTechRef:    https://rdap.arin.net/registry/entity/MPC47-ARIN

RAbuseHandle: MPC47-ARIN
RAbuseName:   Collins, Michelle P
RAbusePhone:  +1-724-284-2034 
RAbuseEmail:  michelle.collins@clevelandcliffs.com
RAbuseRef:    https://rdap.arin.net/registry/entity/MPC47-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#